Nerves of nasal cavity (preview) - Human Anatomy | Kenhub

Summary

In this Kenhub tutorial, Nicole explores the nerves of the nasal cavity, highlighting its anatomy and functions. The nasal cavity, with its nasal septum, warms, humidifies, and filters air, housing the olfactory epithelium for smell. Key structures like the sphenoidal sinus and maxilla are identified. The tutorial also touches on clinical notes, aiming to educate and engage anatomy enthusiasts.

Takeaways

• 👃 The nasal cavity is part of the respiratory system, with two paired cavities located on either side of the nasal septum.
• 🌡️ The primary function of the nasal cavity is to warm, humidify, and filter the air as it enters through the nostrils.
• 🕷️ The nasal cavity's ability to filter air is due to the hair and mucous lining of its internal walls, which remove allergens before the air reaches the lungs.
• 👃 The olfactory epithelium, located in the nasal cavity, is responsible for the sense of smell.
• 💧 The nasal cavity also produces mucus to aid in filtering the air.
• 🦴 The nasal septum is composed of septal cartilage and bones such as the vomer and ethmoid bone.
• 🦴 The maxilla and palatine bones contribute to the formation of the hard palate, which separates the nose from the mouth.
• 🔍 The tutorial includes an image of the nasal cavity, highlighting structures like the nasal septum, lateral wall, sphenoidal sinus, and maxilla.
• 📚 The tutorial also discusses relevant clinical notes after covering the anatomy of the nasal cavity.
• 🎥 The full tutorial, along with more videos, quizzes, articles, and atlas sections, is available to premium members on Kenhub.com.

Q & A

What is the primary focus of the tutorial presented by Nicole from Kenhub?

The tutorial primarily focuses on the nerves of the nasal cavity.

What are the three main functions of the nasal cavity?

The three main functions of the nasal cavity are to warm, humidify, and filter air as it enters the nostrils; to hold the olfactory epithelium, which is responsible for the sense of smell; and to produce mucus that helps filter the air.

How does the nasal cavity warm and filter the air?

The nasal cavity warms and filters the air due to the hair and mucous lining of the internal walls, which remove allergens before the air passes into the lungs.

What is the role of the olfactory epithelium in the nasal cavity?

The olfactory epithelium is the organ that contains the receptors for the sense of smell.

What are the two paired cavities found on either side of the nasal septum?

The two paired cavities found on either side of the nasal septum are the nasal cavities.

What are the nasal cavities separated from each other by?

The nasal cavities are separated from each other by a nasal septum.

What is the composition of the nasal septum?

The nasal septum is composed of septal cartilage and two bones of the skull, the vomer and the ethmoid bone.

How does the nasal cavity contribute to the production of mucus?

The nasal cavity contributes to the production of mucus, which helps filter the air entering the nose.

What is the term for the openings at the beginning of the nasal cavity?

The openings at the beginning of the nasal cavity are called the nares or nostrils.

What is the term for the area that separates the nose from the mouth?

The area that separates the nose from the mouth is called the hard palate.

What additional resources are available to Kenhub premium members?

Kenhub premium members have access to more videos, quizzes, related articles, and atlas sections.

Outlines

00:00

👃 Introduction to the Nasal Cavity Anatomy and Tutorial Overview

In this introductory section, Nicole from Kenhub welcomes viewers to a tutorial focused on the nerves of the nasal cavity. The video will explore various structures like the nasal septum, lateral wall, sphenoidal sinus, maxilla, and some upper teeth, with clinical notes to follow. Before delving into the nerves, the section touches on the nasal cavity's role and anatomy, highlighting the mid-sagittal view of the skull.

💨 The Functions of the Nasal Cavity

This section describes the three main functions of the nasal cavity: (1) warming, humidifying, and filtering air through the nostrils (nares), aided by the mucous and hair linings; (2) serving as the location for the olfactory epithelium, responsible for the sense of smell; and (3) producing mucus, which helps filter the air before it reaches the lungs.

🧠 Anatomy of the Nasal Cavity

This portion focuses on the anatomy of the nasal cavity. Each person has two nasal cavities separated by the nasal septum, which consists of septal cartilage and two bones: the vomer and ethmoid. These bones, although not visible in the image, descend from the cribriform plates. The maxilla and palatine bone form part of the nasal cavity and separate it from the mouth via the hard palate. The section also refers to the hard palate's role, highlighted in green in the diagram.

📚 Additional Learning Resources

In this closing section, viewers are encouraged to visit Kenhub.com for the full video, along with other educational resources such as quizzes, related articles, and anatomical atlases. Premium members gain access to a variety of in-depth learning tools.

Keywords

💡Nasal Cavity

The nasal cavity is a paired anatomical structure in the human body, consisting of two cavities on either side of the nasal septum. It plays a crucial role in the respiratory system by filtering, warming, and humidifying the air that enters the body. In the script, the nasal cavity is described as having a nasal septum, lateral wall, and being connected to the sphenoidal sinus and maxilla. It is also the location where the sense of smell is processed.

💡Nasal Septum

The nasal septum is a partition in the nasal cavity that divides the left and right nostrils. It is composed of cartilage and bone, specifically the vomer and ethmoid bone, which are mentioned in the script as being behind the mucosa. The septum is essential for directing airflow and contributing to the sense of smell.

💡Olfactory Epithelium

The olfactory epithelium is a specialized tissue within the nasal cavity that contains the receptors for the sense of smell. It is highlighted in the script as one of the organs contributing to the nasal cavity's function. This epithelium is responsible for detecting odor molecules and transmitting signals to the brain.

💡Mucosa

Mucosa refers to the moist membrane lining the nasal cavity, which is rich in blood vessels and glandular cells. As described in the script, the mucous lining of the internal walls of the nasal cavity helps to warm and filter the air by trapping allergens before they reach the lungs.

💡Nares

Nares, also known as nostrils, are the external openings of the nasal cavity where air enters and exits. The script mentions that the nasal cavity begins at the nares, emphasizing their role as the starting point for the respiratory process within the nasal cavity.

💡Pharynx

The pharynx is a muscular tube that connects the nasal cavity to the esophagus and the larynx. It is mentioned in the script as the endpoint of the nasal cavity, where the air is directed towards the lungs after being processed by the nasal cavity.

💡Sphenoidal Sinus

The sphenoidal sinus is one of the paranasal sinuses, which are air-filled spaces within the skull. In the script, it is noted as being adjacent to the nasal cavity, playing a role in resonance and possibly in the regulation of airflow.

💡Maxilla

The maxilla is one of the bones that form the upper jaw and contribute to the structure of the nasal cavity. The script mentions the maxilla in relation to the nasal cavity, indicating its role in the overall anatomy and function of the respiratory system.

💡Palatine Bone

The palatine bone is a pair of bones that form the posterior part of the hard palate and the floor of the nasal cavity. The script refers to the hard palate, which is formed by parts of the maxilla and palatine bone, separating the nasal cavity from the mouth.

💡Hair and Mucous Lining

The hair and mucous lining within the nasal cavity are essential for filtering the air. As described in the script, these components help to remove allergens and other particles from the air before it passes into the lungs, serving a critical role in respiratory health.

💡Clinical Notes

Clinical notes refer to the practical applications and considerations of the anatomical structures discussed. The script mentions that after discussing the nerves of the nasal cavity, relevant clinical notes will be covered. This implies that the tutorial will provide insights into how the knowledge of these nerves can be applied in a clinical setting.

Highlights

Introduction to the nerves of the nasal cavity

Nasal cavity's image with nasal septum and lateral wall

Sphenoidal sinus and maxilla with upper teeth visible

Discussion of additional structures in the nasal cavity

Clinical notes to be covered after discussing nerves

Function of the nasal cavity: warming, humidifying, and filtering air

Role of hair and mucous lining in filtering allergens

Nasal cavity's role in the sense of smell through olfactory epithelium

Production of mucus by the nasal cavity for air filtration

Anatomy of the nasal cavity with two paired cavities

Nasal septum composition and its relation to the skull bones

Vomer and ethmoid bones' contribution to the nasal septum

Maxilla and palatine bones' role in forming the hard palate

Nasal cavity's separation from the mouth by the hard palate

Invitation to watch the full video on Kenhub.com for premium members

Availability of more anatomy videos, quizzes, articles, and atlas sections

Encouragement to click the button to watch the full-length video

Mastering anatomy through comprehensive learning resources

Transcripts

hey everyone it's nicole from kenhub and

welcome to our tutorial on the nerves of

the nasal cavity

in this tutorial we're going to be

looking at all the nerves shown on this

image of the nasal cavity which as you

can see

has a bit of the nasal septum turned

upwards around here

the lateral wall of the nasal cavity

just here the sphenoidal sinus

and the maxilla with some of the upper

teeth down here

and as we go through the nurse we'll

just point out a few other structures

here and

there and of course after talking about

these nerves at the end of the tutorial

we'll also go over some

relevant clinical notes but first before

we get on to the nerves of the nasal

cavity we're just going to begin with a

little bit of a chat about the nasal

cavities function

so we're just going to begin with our

image of our mid-sagittal section of the

skull

and here we can see the nasal cavity as

we saw it above

as well as the bones of the skull and we

might as well point them out while we're

here so

our frontal parietal

temporal and occipital bones and the

nasal cavities are two paired cavities

found on either side of the nasal septum

and these cavities begin at the nares or

the nostrils

and end at the pharynx and the nasal

cavity has

three main functions the first of which

being its ability to warm

humidify and filter air as it enters the

nairs and this ability to warm and

filter the air is due to the hair and

mucous lining of the internal walls of

the nasal cavity which remove allergens

from the air before it passes into

the lungs the nasal cavity also holds

the organ that holds the receptors for

the sense of smell

the olfactory epithelium contributing to

its

second function and finally the nasal

cavity also produces mucus which as i

just mentioned

helps filter the air entering the nose

so let's have a brief look at the

anatomy of the nasal cavity and as i

mentioned earlier we each have

two nasal cavities each separated from

each other by a

nasal septum and the nasal septum which

is pointed out by the green arrow just

here

is made of septal cartilage as well as

two bones of the skull

and these two bones which are the voma

and the ethmoid bone

can't be seen in this image but they

would be located behind the mucosa that

appears to be covering the bones and the

cartilage

and these two bones also descend and

arise from the cripper form plates

the maxilla and the palatine bone which

are bones of the skull

the nose as we can see in the image is

separated from the mouth

by the hard palate which is also formed

by parts of the maxilla and palatine

bone

and is highlighted in green

this video is not over yet continue

watching now the full video at

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available to our premium members

on our website not to mention all the

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related articles and atlas sections so

click on the button

in the middle to watch the full length

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